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Finding the Fourth Proportional to 441.79, 609.69 and 255.28

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Solution

The fourth proportional to 441.79, 609.69 and 255.28 is: 352.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.79 : 609.69 = 255.28 : x
  2. Step 2: Convert to fraction form
    441.79/609.69 = 255.28/x
  3. Step 3: Cross multiply
    441.79x = 609.69 × 255.28
  4. Step 4: Simplify right side
    441.79x = 155,643.19
  5. Step 5: Solve for x
    x = 155,643.19/441.79
  6. Step 6: Final answer
    x = 352.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.